Hi,
Typically, capacitors are placed throughout a design to ensure there are no voltage drops on the supply rails. When power is applied, charging these capacitors can result in an inrush current. This can cause voltage rails to fall out of regulation, resulting in the system entering an undesired state. Additionally, the inrush current can exceed the current carrying capability of board connectors as well as PCB traces, resulting in damaging the system.
You can try to reduce the inrush current by increasing the voltage rise time on the load capacitance this would cause the capacitors charge to slow down.
I can recommend you 3 different methods to do this:
- Use Soft start voltage regulators.
- Use external discrete component circuit.
- Use load switches.
Have a great day,
Jose
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